I don't understand the haste with self-driving cars. The technology and related legal issues (who is responsible for accidents?) are not prepared for mass use.

I don't understand the haste with self-driving cars. The technology and related legal issues (who is responsible for accidents?) are not prepared for mass use. Why put cars with half-baked self-driving technology on regular roads and highways with other drivers who didn't consent to this? Why not start from predictable and tightly controlled environments (e.g. inner territory of a factory or a cargo port), limit their speed to 10-20mph, spend a few years refining the technology, and only then gradually expand the operating envelope. When Boeing puts half-baked autopilot technology into MAX8 that's a horrible negligence. When Tesla does a similar thing it's for some reason OK.